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Appendix A: Specifications
VX4101A MultiPaq Instrument User Manual
A–29
Table A–62: Certifications and compliances (cont.)
Characteristics Description
CAT III Distribution-level mains (usually permanently connected). Equipment at this level is
typically in a fixed industrial location.
CAT II Local-level mains (wall sockets). Equipment at this level includes appliances, portable
tools, and similar products. Equipment is usually cord-connected.
CAT I Secondary (signal level) or battery operated circuits of electronic equipment.